Priest of the Ursine Tribe

Whenever you cast a creature, create a 2/2 Snow
Bear creature with "when this creature dies, put
an Ursine Influence counter on target non-token
creature." (You gain control of a creature with a
number of Ursine Influence Counter equal or bigger
than the converted mana cost of that creature, it is a
snow permanent in addition to its other type)